Strand winding machine



NW. 23, 1937. w, MAHQNEY 2,099,985

STRAND WINDING MACHINE Filed July 30, 1956 4 Sheecs-Sheet l INVENTOR.WzZ j0g1E/Va/?0fley BY MM A TTORNEYS.

Nov. 23, 1937. w. E. MAHONEY STRAND WINDING MACHINE Filed July 50, 19364 Sheets-Sheet 2 ATTORNEYS.

Nov. 23, 1937. w. E. MAHONEY STRAND WINDING MACHINE Filed July 30, 19364 Sheets-Sheetfi H I .l k W 5 I'll 1\\\\-\ .l lllllilllllllllll/IlllllINVEN TOR. W7&'a wfE/Va%0fiqy.

BY way A T TORNEYS.

Nov. 23, 1937. w, MAHONEY 2,099,985

STRAND WINDING MACHINE Filed July 30, 1956 4 Sheets-Sheet 4 A TTORNEYS.

Patented Nov. 23, 1937 UNITED STATES PATENT OFFICE 2,099,985 STRANDwnmmo MACHINE Rhode Island Application July 30, 1936, Serial No. 93,403

11 Claims.

This invention relates to a strand winding ma chine, and moreparticularly to a mechanism for v the formation of a package with atapered end;

and the invention'has for one of its'objects the provision of mechanismin which bobbins having varying tapered bases may be utilized withoutreadjustment of the machine.

Another object of the invention is the provision of an arrangementwhereby a part of the machine may be accurately set with reference tothe traversing mechanism for the determination of the movement of thepackage so that bobbins having bases of somewhat varying dimensions maybe used without re-adjustment of the machine, which dimensionsheretofore had been considered necessary to be uniform.

Another object of the invention is the utilization of the pull on thethread in winding the same on the package for advancing the packageaxially, in the formation of the build of the strand on the package.

Another object of the invention is to control the build of the packagefrom the surface of the bobbin base upon which the strand is to build sothat the movement of the package will follow any variations of theangles of the surface of the base upon which the strand is to build andthereby prevent any cave-ins or interlocking of the strand in thepackage which might occur during any irregularities of the surface ofthe base upon which the strand builds.

Another object of the invention is the provision of a mechanism whichmay be used without readjustment for winding packages having a taperedbarrel portion and a more greatly tapered base, which, due todifferences in sizes, which readily occur, possibly from shrinkage orcontraction, have heretofore required repeated adjustments to such anextent as to render tapered end coneshaped packages unuseable from apractical standpoint.

With these and other objects in view, the 'invention consists of certainnovel features of construction, as will be more fully described, andparticularly pointed out in the appended claims.

In the accompanying drawings:

Fig. 1 is an end elevation of a portion of a winding machine upon whichmy invention is mounted;

Fig. 2 is a perspective view of the mandrel and bobbin mounted thereonwith the thread guide and the bobbin control arm showing the strand asjust commencing to be wound on the bobbin;

Fig. 3 is a perspective view similar to Fig. 2,

showing the bobbin as substantially filled with the strand woundthereon;

Fig. 4 is a sectional view through the winding mandrel showing a bobbinthereon and the relative positions of the thread guide and a control forthe movement of the bobbin;

Fig. 5 is a sectional view on substantially line 5-5 of Fig. 4;

Fig. 6 is a perspective view of the sleeve upon which the bobbin ismounted;

Fig. 7 is a sectional view on line 1-1 of Fig. 6;

Fig. 8 is a perspective view of one part of the mandrel;

Fig. 9 is a sectional view showing the control arm as arranged in asingle plane to show the relation of the parts;

Fig. 10 is a sectional view on line Ill-I0 of Fig. 9, showing the latchfor locking the control arm out of contact with the package;

Fig. 11 is a sectional view illustrating a modified form of bobbin aspositioned on the mandrel for;i providing a conical package with atapered en Fig. 12 is an eievational view of modified form of mandrelshowing in section a portion of the machine in which the same ismounted;

Fig. 13 is a sectional view of a portion of the machine showing thehelical slot as located between bearings for the spindle.

Heretofore, in the use of a strand winding machine where it has beendesired to wind a package with a tapered top, a tapered base has beenprovided and the machine adjusted to advance the cop upon which thestrand was wound so that the strand would fill up upon the tapered 35base and form a correspondingly tapered end at the top. A mechanism foraccomplishing this purpose is illustrated in the patent to Bosworth, No.1,953,641, dated April 3, 1934. (ne of the troubles experienced with theapparatus shown in this patent and other similar apparatus whichcontrols the axial movement of the cop upon which the strand was woundin response to the increase of the diameter of the package, is that thepackages must be accurately positioned upon the winding mandrel, and theyarn must be initially accurately placed upon the package, or else someone must adjust the machine so that this condition will occur. Further,there may be some irregularities in the tapered face consisting in avariation of angle of the base which may cause locking in of the yarn ofthe package or a hollow at the base; and in order to avoid suchundesirable conditions, I provide a. means for positively tending tofeed the package axially and then hold the same back by a stop whichengages the tapered base, and thus the traverse of the yarn follows thisbase to control its build; and the following is a more detaileddescription of the present means by which these advantageous results maybe accomplished:

With reference to the drawings, it is unnecessary to illustrate indetail the usual parts of the winding machine of such construction asappears in a series of patents owned by the Universal Winding MachineCompany, Foster Machine 00., and others, one of the essentials of such amachine being that it have a positive driven spindle. In Fig. 1 I haveindicated the end of one such winding machine, the body of which isdesignated Ill having a stud ll extending therefrom upon which isrockably mounted a frame l2. A counter-weight l3 at one end of thisframe tends to swing the same to a vertical position. The thread guideconsisting of a porcelain disk l4 with a notch l5 therein and an arm l6with a porcelain member l1 having an opening l3 are carried by thisframe and guides the strand as it builds up its diameter on the bobbin.The body III of the machine is provided with an arc-shaped member l3against which a friction rod 20 pivoted as at 2! to the frame i2 isadapted to bear during the winding operation.

It is of course understood that the above merely represents some of thewell-known parts of one make of machine to which my invention may beapplied, other, winding machines being equally substitutable therefor.My invention may be added as an attachment to machines now in use aswell as being built into new machines.

The mandrel upon which the bobbin is mounted is designated generally 25and is fixed to the rotatably mounted spindle 26 in the machine. Thismandrel consists of an arbor 21 and a sleeve 28 which has a bore 29 of asize larger than the external diameter of the arbor 21 so as to berotatable thereon; and in order that a relative rotation of the sleeveand arbor will cause an advancement of the sleeve along the arbor, Ihave provided a stud 30 and generally helical slot connection betweenthem. The stud may be in either part and the slot in the other part. Inthe form shown in Figs. 1 to 8 inclusive, this stud 30 is on the arbor21 and the helical slot 3| is in the sleeve 23. A bobbin abutment collar32 is secured upon the sleeve at some suitable location and is held insuch position by means of a set screw 33. The sleeve 23 is grooved as at34 and resilient bowed wires 35 are located within these grooves to becompressed by the positioning of the barrel portion 31 of the bobbin onthe sleeve to hold the bobbin securely in position thereon. The bobbinis also provided with a conical base 38.

It is desirable in the trade to wind threads, strands, filaments, wire,or other like material upon bobbins or containers in such a. manner thatthe completed package will have a tapered outer end and a hollow inneror basal tapered end that is in substantial parallelism with the outerend, and this hollow taper is wound against a tapering base as 38 of thebobbin to support the same. Accordingly, it has been usual to providesome mechanism which would positively advance the bobbin in accordancewith a predetermined known taper of the base, and should there be anyvariation in the base the full desired supporting function thereof wouldfail. I, however, advance the bobbin by means of the helical slot andpin connection, which I have above described, which advancement occursdue to the pull of the thread as it is wound on the bobbin; and I retardsuch advancement by a feeler engaging with the tapered base of thebobbin so that regardless of the taper of the base my mechanism forcontrol will operate to properly advance the bobbin, and in this mannerI obtain a tapered end which corresponds exactly with the shape of thetapered base which is used as a'pattern and guide for the advancement ofthe bobbin.

The control mechanism consists of an arm 40 which is securely mounted onthe frame Ill of the machine by means of a bolt 4i extending through theboss 42 of this arm. The upper end of the arm is also provided with aboss 43 threaded as at 44 into which the threaded portion 46 of a shaft46 is mounted and held against rotation by the check nut 41. An arm 43has its tubular base portion 43 rotatably mounted on the shaft 46 withone end abutting the shoulder 50 and a knob 6i secured to the shaft byset screw 62 engaging the other end of this tubular base. A spring 53having one end 54 locked in the tubular base of the arm and the otherend 66 locked in the knob 5| tends to swing the arm 43 about the shaft46 as a center. The tension on the spring 53 may be varied by turningthe knob about the shaft 46 and then securing it by the set screw 62 inthe position to which it is rotated. At the outer end of the arm 43 Ihave provided a threaded opening 56 in which there is provided athreaded member 51 held in position by the check nut 63. Into one end ofthis threaded member 51 I mount the stud 69 by means of the reducedthreaded portion 60 providing a shoulder 6| to abut against the end ofthe member 61; and upon this stud is a bushing 62 and a contact rollerfeeler member 63 both held by means of the head 64 of the stud 53.

This roller 63 engages the tapered bobbin base 33 and prevents axialmovement of the bobbin therealong. As the strand builds up on the bobbinincreasing its diameter the control roller or feeler member 63 is movedoutwardly from the center of the mandrel, thereby permitting the bobbinto advance incrementally and thus causing the taper 66 to be formed atthe outer end of the package as the advancement gradually takes place.It is of course understood that the strand 61 which is wound upon thebobbin passes through the guides l1 and I4 and is traversed in such amanner as to form the wind desired; that which is shown is sometimescalled a cross wind" package and is one familiar to those skilled in theart; several different winds, however, may be used in connection withthe invention, the particular wind being immaterial.

I have referred to the slot 3| "as being helical. I have found, however,that a pitch of a greater advancing power is desirable at thecommencement of the winding of the strand upon the bobbin than after thestrand has packed up sufficiently to gather weight and inertia of itselfand accordingly, rather than make the slot of the same pitch along itslength I commence the slot at a certain pitch and then increase thispitch to provide less power of advancement as the package builds up inmass. This pitch which is used for the slot must bear a certain balancedrelation to thespring 53 for holding the arm over to cause the contactmember to control the advance of the sleeve. as will be readily apparentthat a pitch of too great a power would overcome the power of the spring63 to act as a stop and control the advance of the bobbin, or viceversa, the spring might be of sufllcient power to overcome the tendencyfor advancement of the helical slot along the mandrel. Accordingly, Ihave found that a slot which will have one revolution in approximatelytwelve inches is satisfactory and I can control advancement of thepackage by a spring of tolerable strength, the spring, of course, may bevaried in order to apply more or less tension on the feeler member, andof course the pitch of the slot may be varied which may be advisable fordifferent weights of strands wound or other variations necessary tocompensate for. It will also be apparent that instead of the use of aspring for tending to move the stop into engagement with the'taperedface of the package, I may utilize a weight for this purpose-which maybe adjusted as to the force which it will exert. In order to withdrawthe feeler or contact member from the operation of the spring 53 to urgeit into working position, the arm 48 may be retracted and a latchdropped into the notch 86 in the tubular base 48 of this arm to hold itagainst the action of this spring.

In some cases instead of having the helical slot in the sleeve uponwhich the bobbin is mounted, I may have a tubular member 15 with ahellcal slot 76 therein mounted in the spindle 26 and an arbor ll havinga pin 18 thereon located in the slot 78 with a collar 19 on the arbor.The bobbin will then be mounted on the arbor 11 against the collar 59and the axial movement will be caused by the relative rotation of theparts 15 and 11 due to the pull of the thread.

Instead of the mandrel being an attachment, as in Fig. 12, I may boreout the spindle 26 as at 85 where it. extends through the bearings 86 ofthe machine. The arbor 87 is located and may rotate in this bore 85. Agenerally helical slot 88 will be provided in the spindle 26 and a pin88 secured to the arbor extends into the slot 88 so that when relativerotation takes place of the arbor and spindle the arbor will be advancedwith reference to the spindle. The amount of advance will be governed bythe length of the slot.

The arbor 87 is of a larger size as 88 beyond the end 90 of the spindle,and an adjustable collar 91! on this larger portion serves as anabutment for the bobbin mounting member. The opening 82 may be utilizedto secure the arbor 81 against movement with reference to the spindle 26if a straight wind is desired.

When it is desired to wind a bobbin having a tapered base 80 and atapered barrel portion 36 I provide an attachment 82 of a tapercorresponding to the inner shape of the barrel 8! and mount the samesecurely on the sleeve 28 by means of the set screw 83, this member 82having bow wires 8d therein for the securing of the barrel 8! inposition. In this manner a package which is tapered along its bodyportion and more sharply tapered at its end may be formed. When atapered package is provided the feeler roll 63 will also be tapered toconform to the taper of the barrel and thus provide for a more uniformand distributed pressure thereon.

When preparing to wind a package, this machine is set so that thecontact point Ill of the control or feeler member is in line with thedelivery point of the yarn so that the yarn will engage the juncture ofthe base 38 and the cylindrical barrel portion 3'! or the tapered barrelM of the bobbin for the start of the first layer of the strand; in otherwords, the point 10 and the guide ill are located in a plane at rightangles to the axis of the mandrel. So long as this occurs, it isimmaterial just where the bobbin is positioned on the mandrel, as themandrel will feed the bobbin forward as soon as the machine starts.Therefore, the distance between the juncture of the base 38 and the endof the barrel 3'! or 8| of the bobbin which contacts the collar 32 isimmaterial; and it is also immaterial at what taper the base is maderelative to the barrel portion of the bobbin.

The contact member is preferably tapered as at 89 at an angle such aswill fit along the taper of the base of the bobbin, although notessentially so. However, it is considered that if minor irregularitiesexist in the base that the broader contact surface will tend to providea smoother tapered end than where the contact member is of such a narrowdimension as to follow such small changes in taper.

Another feature of this construction is that should it be desired toprovide a straight end wind as distinguished from a tapered end wind,the adjustment of the machine is easily made by loosening the set screw33 and adjusting the collar 32 if necessary and then placing a set screwin the threaded opening 98 (Fig. 4) to bind the sleeve 28 againstslidingon the arbor 21.

The foregoing description is directed solely towards the constructionillustrated, but I desire it to be understood that I reserve theprivilege of resorting to all the mechanical changes to which the deviceis susceptible, the invention being defined and limited only by theterms of the appended claims.

I claimi l. A strand winding machine for a tapered base bobbinconsisting of a revolvable mandrel, a strand guide to present the strandto be wound, means relatively to traverse said strand guide along themandrel in the winding of successive layers upon a bobbin, means formoving the strand mass axially of the mandrel as wound, means engagingthe tapered bobbin base for retarding said axial movement, and means0perative in response to the building of the strand mass toincrementally relieve said retarding means whereby the bobbin and massthereon axially moves along the mandrel.

2. A strand winding machine for a tapered base bobbin consisting of arevolvable mandrel, a strand guide to present the strand to be wound,means relatively to traverse said strand guide along the mandrel in thewinding of successive layers upon a bobbin, means for moving the strandmass axially of the mandrel as wound, means engaging the tapered bobbinbase and bearing constantly upon the forming mass for retarding saidaxial movement and responsive to the building of the strand mass toincrementally relieve said retarding means whereby the bobbin and massthereon axially moves along the mandrel.

3. A strand winding machine for a tapered base bobbin consisting of arevolvable mandrel, a strand guide to present the strand to be wound,means relatively to traverse said strand guide along the mandrel in thewinding of successive layers, means for moving the strand mass axiallyof the mandrel as wound, and means in contact with the base forfollowing the shape of the base of the bobbin and controlling therefromthe axial advancement of the bobbin and strand mass thereon.

4. A strand winding machine for a tapered base bobbin consisting of arevolvable mandrel, a

strand guide to present the strand to be wound. means relatively totraverse said strand guide along the mandrel in the winding ofsuccessive layers, means for moving the strand mass axially of themandrel as wound, and a member engaging the forming strand mass'and thetapered bobbin base to block the axial advancement of the strand massalong the mandrel, said building mass forcing the member outwardly toincrementally relieve the means for blocking said axial advancement,whereby the advancement is controlled by the tapered base regardless ofits taper or contour.

5. A strand winding machine for a tapered base bobbin consisting of arevolvable mandrel, a strand guide to present the strand to be wound,means relatively to traverse said strand guide along the mandrel in thewinding of successive layers, means for moving the strand mass axiallyof the mandrel as wound, and a member provided with resilient meansurging it toward the formin strand mass for contact therewith and into aposition to be engaged by the bobbin base as advanced along said mandrelto block axial advancement of the strand mass, said building massforcing the member outwardly to incrementally relieve the means forblocking said axial advancement, whereby the advancement is controlledby the tapered base regardless of its taper or contour.

6. A strand winding machine for a tapered base bobbin consisting of arevolvable mandrel, a strand guide to present the strand to be wound,means relatively to traverse said strand guide along the mandrel in thewinding of successive layers, means for moving the strand mass axiallyof the mandrel as wound, an arm having a rolling contact member, andresilient means urging said arm toward the forming strand mass forcontact therewith and into a position to be engaged by the taperedbobbin base as advanced along the mandrel to block axial advancement ofthe strand mass, said building mass forcing the member outwardly toincrementally relieve the means for blocking said axial advancement,whereby the advancement is controlled by the tapered base regardless ofits taper or contour.

7. A strand winding machine for a tapered base bobbin consisting of arevolvable mandrel, a strand guide to present the strand to be wound,means relatively to traverse said strand guide along the mandrel in thewinding of successive layers, means for moving the strand mass axiallyof the mandrel as wound, a member provided with resilient means urgingit toward the forming strand mass for contact therewith and into -aposition to be engaged by the bobbin base as'advanced along said mandrelto block axial advancement of the strand mass, said building massforcing the member outwardly to incrementally relieve the means forblocking said axial advancement, whereby the advancement is controlledby the tapered base regardless of its taper or contour, said resilientmeans being adiustable for varying the urge toward the strand mass.

8. A strand winding machine for a tapered base bobbin consisting of arevolvable mandrel, a strand guide to present the strand to be wound,means relatively to traverse said strand guide along the mandrel in thewinding oi. successive layers, means for n oving the strand mass axiallyof the mandrel as wound, and a member provided with resilient meansurging it toward the forming strand mass for contact therewith and intoa position to be engaged by the bobbin base as advanced along saidmandrel to block axial advancement of the strand mass, said buildingmass forcing the member outwardly to incrementally relieve the means forblocking said axial advancement, whereby the advancement is controlledby the tapered base regardless of its taper or contour, said member alsobeing adjustable axially o! the mandrel to vary its position withreference to the positioning of the bobbin in a desired location on themandrel.

9. A strand winding machine for a tapered base bobbin consisting of arevolvable mandrel, a strand guide to present the strand ,to be wound,means relatively to traverse said strand guide along the mandrel in thewinding of successive layers, means responsive to the pull of the strandfor moving the strand mass axially of the mandrel as wound, and meansfor retarding said axial movement and responsive to the building of thestrand mass to incrementally relieve said retarding means whereby themass axially moves along the mandrel.

10. A strand winding machine for a tapered base bobbin consisting of arevolvable mandrel, a strand guide to present the strand to be wound,means relatively to traverse said strand guide along the mandrel in thewinding of successive layers, means responsive to the pull of the strandfor moving the strand mass axially of the mandrel as wound including apart in which the mass is mounted rotatable relative to the mandrel andhelical slot and pin connection between said mandrel and part relativelyrotatable thereon, and means for retarding said axial movement andresponsive to the building of the strand mass to incrementally relievesaid retarding means whereby the mass axially moves along the mandrel.

11. A strand winding machine for a tapered base bobbin consisting of arevolvable mandrel, a strand guide to present the strand to be wound,means relatively to traverse said strand guide along the mandrel in thewinding of successive layers, a sleeve on the mandrel, said sleeve andmandrel having respectively a helical slot and pin connection betweenthem whereby a relative rotation causes an axial movement, and means incontact and following the tapered base of the bobbin as a pattern tocontrol the advance of the strand mass along the mandrel.

WILLIAM E. MAHONEY.

